<?php
/**
 * @package    DPCalendar
 * @author     Digital Peak http://www.digital-peak.com
 * @copyright  Copyright (C) 2007 - 2014 Digital Peak. All rights reserved.
 * @license    http://www.gnu.org/licenses/gpl.html GNU/GPL
 */
defined('_JEXEC') or die();

JLoader::import('joomla.application.categories');
JLoader::import('components.com_dpcalendar.helpers.dpcalendar', JPATH_ADMINISTRATOR);

function dPCalendarBuildRoute (&$query)
{
	$segments = array();

	// Get a menu item based on Itemid or currently active
	$app = JFactory::getApplication();
	$menu = $app->getMenu();
	$params = JComponentHelper::getParams('com_dpcalendar');
	$advanced = $params->get('sef_advanced_link', 0);

	// We need a menu item. Either the one specified in the query, or the
	// current active one if none specified
	if (empty($query['Itemid']))
	{
		$menuItem = $menu->getActive();
	}
	else
	{
		$menuItem = $menu->getItem($query['Itemid']);
	}

	$mView = (empty($menuItem->query['view'])) ? null : $menuItem->query['view'];
	$mCatid = (empty($menuItem->query['calid'])) ? null : $menuItem->query['calid'];
	$mId = (empty($menuItem->query['id'])) ? null : $menuItem->query['id'];

	if (isset($query['view']))
	{
		$view = $query['view'];

		if (empty($query['Itemid']) || $view == 'events')
		{
			$segments[] = $query['view'];
		}

		// We need to keep the view for forms since they never have their own
		// menu item
		if ($view != 'form' && $view != 'davcalendar' && $view != 'attendee' && $view != 'pay' && $view != 'message' && $view != 'callback')
		{
			unset($query['view']);
		}
	}

	// Are we dealing with an event that is attached to a menu item?
	if (isset($query['view']) && ($mView == $query['view']) and (isset($query['id'])) and ($mId == intval($query['id'])))
	{
		unset($query['view']);
		unset($query['calid']);
		unset($query['id']);

		return $segments;
	}

	if (isset($view) and ($view == 'calendar' or $view == 'event'))
	{
		if (isset($query['id']) && $mId != intval($query['id']) || $mView != $view)
		{
			$calid = null;
			if ($view == 'event' && isset($query['calid']))
			{
				$calid = $query['calid'];
			}
			elseif (isset($query['id']))
			{
				$calid = $query['id'];
			}

			$menuCatid = $mId;
			$category = DPCalendarHelper::getCalendar($calid);

			if ($category && ! $category->external)
			{
				// TODO Throw error that the category either not exists or is
				// unpublished
				$path = $category->getPath();
				$path = array_reverse($path);

				$array = array();
				foreach ($path as $id)
				{
					if ((int) $id == (int) $menuCatid)
					{
						break;
					}

					if ($advanced)
					{
						list ($tmp, $id) = explode(':', $id, 2);
					}

					$array[] = $id;
				}
				$segments = array_merge($segments, array_reverse($array));
			}

			if ($view == 'event')
			{
				if ($advanced)
				{
					list ($tmp, $id) = explode(':', $query['id'], 2);
				}
				else
				{
					$id = $query['id'];
				}

				$segments[] = $id;
			}
		}

		unset($query['id']);
		unset($query['calid']);
	}

	if (isset($query['layout']))
	{
		if (! empty($query['Itemid']) && isset($menuItem->query['layout']))
		{
			if ($query['layout'] == $menuItem->query['layout'])
			{
				unset($query['layout']);
			}
		}
		else
		{
			if ($query['layout'] == 'default')
			{
				unset($query['layout']);
			}
		}
	}

	return $segments;
}

function dPCalendarParseRoute ($segments)
{
	$vars = array();

	// Get the active menu item.
	$app = JFactory::getApplication();
	$menu = $app->getMenu();
	$item = $menu->getActive();
	$params = JComponentHelper::getParams('com_dpcalendar');
	$advanced = $params->get('sef_advanced_link', 0);

	// Count route segments
	$count = count($segments);

	if (! empty($segments) && $segments[0] == 'events')
	{
		$vars['view'] = $segments[0];
		$vars['format'] = 'raw';
		return $vars;
	}

	// Standard routing for events.
	if (! isset($item))
	{
		$vars['view'] = $segments[0];
		$vars['id'] = $segments[$count - 1];
		return $vars;
	}

	// From the categories view, we can only jump to a category.
	$id = (isset($item->query['id']) && $item->query['id'] > 1) ? $item->query['id'] : 'root';

	$category = DPCalendarHelper::getCalendar($id);

	$categories = array();

	if (method_exists($category, 'getChildren'))
	{
		$categories = $category->getChildren();
	}
	$found = 0;

	foreach ($segments as $segment)
	{
		foreach ($categories as $category)
		{
			if (($category->slug == $segment) || ($advanced && $category->alias == str_replace(':', '-', $segment)))
			{
				$vars['id'] = $category->id;
				$vars['view'] = 'calendar';
				$categories = $category->getChildren();
				$found = 1;
				break;
			}
		}

		if ($found == 0)
		{
			if ($advanced)
			{
				$db = JFactory::getDBO();
				$query = 'SELECT id FROM #__dpcalendar_events WHERE catid = ' . $vars['id'] . ' AND alias = ' .
						 $db->Quote(str_replace(':', '-', $segment));
				$db->setQuery($query);
				$id = $db->loadResult();
			}
			else
			{
				$id = $segment;
			}

			$vars['id'] = $id;
			$vars['view'] = 'event';

			break;
		}

		$found = 0;
	}

	return $vars;
}
